That would make the figures "glossy".....
I have used the Caesar figures on all my 1:72 armor builds.
They are not the typical polyvinyl figures made by the other
manufacturers...they seem to have some styrene mixed into the
plastic, making them a lot more rigid.
I have drilled,carved and even sanded them with excellent results...not like the others.
Basically once built or converted, I wash, prime and paint and
finally coat them with a matte varnish...they look great and
allow some handing for placement on the vehicle and/or diorama.
I paint all my figures with Vallejo Model Color paints...these
paints contain some "poly" properties allowing some flexing without
causing any issues.
Badger ModelFlex are also another paint with "flex" properties.
Hope this helps, it works great for me.